Drive shaft diagram
The cardan drive shafts transmit torque from the transfer case to the front drive wheels. The shafts are of different lengths and have synchronous ball bearings on the outer side (equal angular velocities) cardan joints.
Gearbox joints (internal hinges) are extended, which allows changing the length of the shafts when sprung wheels. The outer and inner belts of the hinge can be moved (when rolling balls) relative to each other by approximately 40 mm, which lengthens or shortens the hinge.
The splined end of the outer part of the outer synchronous cardan joint is inserted into the front wheel hub. On the reverse side, at the transfer case, the flange of the outer belt of the ball bearing is attached to the gearbox carrier with six bolts with internal Allen heads.
The right shaft is longer and made of steel pipe. The left shaft is shorter and made of steel rod. (If the drive unit could excite shaft oscillations in a certain operating mode, different shaft materials and, consequently, their masses would be selected. This ensures that the oscillation frequency lies in a region that is not achievable under operating conditions).
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The joints are enclosed in rubber cuffs, the integrity of which must be checked during the inspection of the car. The joints contain consistent grease. In case of damage, the cardan shaft must be replaced entirely.